SMA Sunny Central SC 100 User manual

Sunny Central SC 100
Installation manual
Installation manual Version 3.0 SC-100-13:SE2407
IME-SCO

SMA Technologie AG
Installation manual SC-100-13:SE2407 Seite 1
Index
1 Notes on this Manual. . . . . . . . . . . . . . . . . . . . . . 3
1.1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Target Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Explanation of the Symbols Used . . . . . . . . . . . . . . . 3
2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 Appropriate Usage. . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.3 About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.4 Checking and Storage . . . . . . . . . . . . . . . . . . . . . . 6
3.5 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.6 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.7 Special Hazards of Photovoltaic Systems . . . . . . . . . 7
3.8 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . 8
3.9 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.10 Commissioning, Maintenance and Repair . . . . . . . . . 9
3.11 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.12 Disconnect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.13 General Information . . . . . . . . . . . . . . . . . . . . . . . 12
4 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.1 Overview of Weights and Dimensions . . . . . . . . . . 14
4.2 Transport Possibilities . . . . . . . . . . . . . . . . . . . . . . 14
5 Installation Requirements. . . . . . . . . . . . . . . . . . 15
5.1 Installation Site Requirements . . . . . . . . . . . . . . . . . 15
5.1.1 Foundation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

SMA Technologie AG
Seite 2 SC-100-13:SE2407 Installation manual
5.1.2 Minimum Workspace Requirements . . . . . . . . . . . . . . . . . . . . .18
5.1.3 Inverter Protection Rating / EMC / Sound Levels . . . . . . . . . . . .18
5.1.4 Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
6 On-Site Inverter Installation . . . . . . . . . . . . . . . . 22
6.1 Mounting on the Foundation . . . . . . . . . . . . . . . . . 22
7 Electrical Connection . . . . . . . . . . . . . . . . . . . . . 24
7.1 External Connections . . . . . . . . . . . . . . . . . . . . . . 24
7.1.1 AC Grid Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . .24
7.1.2 AC Control Voltage Connection (Optional). . . . . . . . . . . . . . . .27
7.1.3 Handling the Connection Terminals . . . . . . . . . . . . . . . . . . . . .29
7.1.4 Sensors and Digital Outputs . . . . . . . . . . . . . . . . . . . . . . . . . .29
7.1.5 Inverter Communication Connection . . . . . . . . . . . . . . . . . . . . .30
7.1.6 Shield Contact Handling Instructions . . . . . . . . . . . . . . . . . . . .30
7.1.7 Sunny String Monitor Communication Connection . . . . . . . . . . .31
7.1.8 Lightning and / or Overvoltage Protection . . . . . . . . . . . . . . . .31
7.1.9 PV Generator Power Connection (DC Connection) . . . . . . . . . .34
8 Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.1 Prerequisites. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.2 Cabling Checks . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.3 Switch On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
9 Appendix A . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
10 Appendix B Technical Data . . . . . . . . . . . . . . 40
11 Appendix C . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
12 Appendix D . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

SMA Technologie AG Notes on this Manual
Installation manual SC-100-13:SE2407 Page 3
1 Notes on this Manual
1.1 Validity
This installation guide covers the correct installation and commissioning of type SC 100
indoor / outdoor SMA inverters.
1.2 Target Group
Only trained electricians approved by the responsible energy supply company may
install and commission the inverters. The instructions assume that you, the installer, are
familiar with electrical installations and know the corresponding rules and regulations.
1.3 Explanation of the Symbols Used
This symbol indicates a fact which, if ignored, could result in damage to
components or personal hazard. Please read these sections especially
carefully.
This symbol indicates a fact that is important for optimum operation of the product.
Read these sections carefully to ensure optimum operation of your product.
This symbol indicates an example.

Introduction SMA Technologie AG
Page 4 SC-100-13:SE2407 Installation manual
2 Introduction
Dear customer,
You have made a good choice in purchasing the Sunny Central solar inverter. To
guarantee correct connection and reliable operation of the device, please take note of
the safety and installation instructions in the following sections. The following extra
documents are also available in addition to the installation guide:
• Sunny Central user manual
• Sunny Central wiring diagrams
• Installation requirements (contains views of the inverter)
Figure 2.1: Sunny Central SC100 Indoor / Outdoor front view

SMA Technologie AG Safety Instructions
Installation manual SC-100-13:SE2407 Page 5
3 Safety Instructions
The Sunny Central SC100 is built using the latest technology, according to recognized
safety standards. Despite this, hazard to users, third parties or equipment can arise
during operation or when working on the device. These hazards can be reduced to a
minimum when the device is used appropriately as directed.
Faults that affect or limit the safety of the device must be immediately rectified.
Unauthorized modifications and the use of spare parts not recommended by SMA
Technologie AG may cause fire, material damage and electrical shock. Unauthorized
personnel must not have access to the equipment.
Warning signs must always be clearly readable and immediately replaced if damaged.
3.1 Appropriate Usage
Appropriate use of the Sunny Central means following all instructions in the installation
guide relating to transport, installation, electrical connection, and commissioning of the
equipment.
Any deviation from the installation guide instructions is regarded as inappropriate use
of the equipment. SMA Technologie AG accepts no responsibility or liability for any
and all damage resulting from inappropriate use of the equipment.
Appropriate use of the equipment also entails:
• Observation of the safety instructions listed here and in the following sections
• Observation of the instructions in the Sunny Central user manual
• Observation of additional documentation for variants and options, such as
grounded operation (GFDI) and the extended voltage range (EVR)
• Conformance to the device-dependent technical data
3.2 Personnel
Only qualified technical personnel may perform any and all work on the Sunny Central.
"Qualified" means that the personnel must possess training relevant to the activity
performed.
For commissioning and operation of the Sunny Central inverter, the personnel must be
familiar with the content of the Sunny Central documentation. In particular, the safety
instructions must be followed.

Safety Instructions SMA Technologie AG
Page 6 SC-100-13:SE2407 Installation manual
3.3 About this Manual
This manual was written with the greatest possible care. However, discrepancies cannot
be excluded. SMA Technologie AG accepts no responsibility or liability for injury to
persons, or material damage caused by mistakes in this manual.
3.4 Checking and Storage
Upon receipt of the equipment, check the packaging and the device for any possible
damage and compare the contents of the delivery with the delivery documentation. In
the case of damage to the device and/or unclear delivery contents, please contact
SMA Technologie AG immediately (contact address is in the appendix).
3.5 Transport
Only the transport methods described in the installation guide are permissible. Please
note the heavy weight of the equipment and the non-central center of gravity. The center
of gravity is marked on the packaging.
The equipment may only be stored when closed, thus ensuring its interior is
protected from dust and moisture.
During longer storage periods, the equipment must be kept in a dry place to
prevent moisture from entering the inverter.
Danger of tipping during transport.
Follow the "Sunny Central Transport Instructions" in Appendix A and pay
attention to the center of gravity markings on the packaging.

SMA Technologie AG Safety Instructions
Installation manual SC-100-13:SE2407 Page 7
3.6 Installation
The information contained in the installation guide must be observed when installing the
inverter. The SC 100 Indoor is designed for indoor installation, with a protection rating
of IP21. The SC 100 Outdoor is designed for outdoor installation, with a protection
rating of IP44/54. The device must be installed in a manner such that the proper
electrical connections, adequate ventilation, and adequate fire protection are possible.
The Sunny Central SC100 Outdoor product line has been type-tested and approved
for outdoor installation in accordance with the industry-standard EMC limits (EMC =
Electro Magnetic Compatibility).
3.7 Special Hazards of Photovoltaic Systems
Photovoltaic systems have special characteristics representing special hazards:
• An active power source is connected. This means that, depending on the
operating mode, there may be voltage present, either from the photovoltaic
generator and/or the Sunny Central. This is especially important to note when
disconnecting particular parts of the system
• Very high DC voltages are present (no zero-crossing) which, in case of a fault or
inappropriate use of fuses or plugs, may lead to arcing.
• The short-circuit current of the photovoltaic generator is only slightly more than the
maximum operating current and is also dependent on the level of solar irradiation.
This means that, if a short circuit occurs in the system, the existing circuit breakers
are not guaranteed to switch off.
• A highly branched generator array may be difficult to disconnect if a fault
develops (e.g. short circuit). We recommend the extra use of external DC circuit
breakers for disconnecting the inverter and/or the DC main cables / Sunny String
monitors (DC circuit breakers optionally available). One circuit breaker should be
allocated to each input, and these should be located near to the Sunny Central,
as described in the standard VDE 0100 part 7-712 and the VDI 6012 regulations.
Please observe the additional information on installing the SC 100 Outdoor
located in Appendix C.
An active power source is connected!

Safety Instructions SMA Technologie AG
Page 8 SC-100-13:SE2407 Installation manual
3.8 Electrical Connection
The electrical connection must be performed according to the installation guide, the
device connection plan and the technical data of the device.
AC Grid Connection
The customer must determine the required grid connection type for the AC grid
connection (TN-C, TN-S, TT grid) and coordinate it with SMA.
Ensure the grid connection cable for grid feeding is fused at the nominal current
indicated on the name plate. If the specified nominal current differs from the nominal
current of the fuse plug, the fuse plug having the next highest nominal current may be
used. A power switch is used for the optional load-disconnecting switch.
An external input control voltage (optional) must be fused with a circuit breaker
conforming to the specifications in Appendix B (SC100 Indoor / Outdoor technical
data).
Lightning / Overvoltage Protection
The device has internal overvoltage protection on the DC side and, depending on the
option chosen, also has lightning and/or overvoltage protection on the AC side. The
desired level of protection can only be achieved when the grid connection point has a
Lightning Protection Zones Concept in compliance with DIN VDE 0185-3 (DIN EN
62305 / VDE 085, part 305-3). In keeping with the Lightning Protection Zones
Concept, there are lightning conductors and combined overvoltage protectors which
are not included in the scope of delivery for the equipment and which must be installed
at the entrance (transfer point from lightning protection zone LPZ 0 to LPZ 1).
SMA must be informed of the required AC grid connection type!
We recommend using lightning protection for the PV generator.
A direct strike can irreparably damage the overvoltage protectors or other system
components and cause additional consequential damages.
We recommend expanding the lightning and overvoltage protection for external
input control voltage. Please see section 7.1.9 Lightning and Overvoltage
Protection.